Automobile brake



July 3', '1923. 1,460,893 N. C. DIVELBISS AUTOMOB ILE BRAKE Filed Oct.18, .1920 2 Sheets-Sheet l July 3; 1923.

L46Q893 N. C. DIVELBISS AUTOMOBILE BRAKE Filed 001;. 18. 1920 2Sheets-Sheet 2 k jzmfzzw 23, MM

Patented July 3, 1923 I i I, i i

UNI-T Z TA jI A' t'E-Ntf nnw'ron o. J J IvELB ISS, or SAN manner),icanitronura, I

AUTOMOBILE B anks."

Application filed October 1a, 1920. seal in. 417,557:

T all whom it may concern: ing 17. A spring 18 is preferably coiled.

I Be it known that I, NEWTON C. DIVELBISS, around the stem of the tongueor dog be a citizen of the United States of America, retween the outerend of the latter and theinsiding at San Leandro, in the county ofAlaner surface of the housing to' yieldi'nglv im 5 meda, and State ofCalifornia, have invent pel the dog or tongue towardfthe plane 01' 1 ednew and useful Improvements in Autothe ratchetjteeth 14- sothat whenreleased mobile Brakes, of which the following is a the tongue or dogpromptly engages a tooth. specification. v of theratchet to lock thewheel carrying the The object of the invention is to provide hub plateagainst movement in one direca simple, inexpensive and efiicient brakefor tion. The means for operating the tongue automobiles and similarvehicles, designed, or dog for-releasing the wheel ma consist forexample, to look a car against retrograde as illustrated. in thedrawings of a hand movement and adapted for application to lever 18operating infconnection with a machines of the various commercial, typestoothed segment 19 and connected by a rod 70 under conditionsrepresenting a simplifica- 20 with a lever. 2l,which in turn isconnected tion of the form and construction embodied by a link 22 withaswivel 23 mounted upon. in my former application Number 362,450, theinner end. of the stem 11. Obviously"; filed March 1, 1920; and withthese objects when the hand lever '18 is moved rear- I in view theinvention consists in the con wardly, the lever 21 is movedto'aposition.7 20 struct-ion and combination of parts of which approachingparallelism with the rear axle a preferred embodiment is shown in theof. the vehicle and consequently thelinks 22 drawing, wherein releasetheirpull on the swivels 23 and, the

Figure 1 is a plan view of the apparatus stems'of the dogs 10, allowingthe latterjin Q applied in the operative position to a vehivirtue of thepressure enertedbythe springs f 25 cle of the automobile type. 18, tocome in contact with the ratchet teeth. Figure 2 is a side view of thesame. Obviously when they engage behind the per- Figure 3 is a face viewof the brake cas pendicular faces of the latter, retrograde or ing.backward movement 'of the'. vehicle wheelsfis Figure 4: is a similarvi'ew of the hub precluded. Forward movement is per-- 5 plate. mitted,however, forthen' theslantingfaces Figures 5 and 6 are detail sectionalviews of the ratchet teeth engagethe dogs press of the lock mechanismrespectively in ening them back, this movement'of the dogs g i gaged anddisengaged positions. being permitted bythe sliding engagement I Figure7is a detail view in perspective of which obviously obtains'between thelinks 90 one of the tongue or dog guides. 22, the stems ll andtheswivels .23. For-Q Figure 8 is a similar view of the tongue wardmovement'of thehandle18".obviouslv or dog. resultsin rocking thevleverf21 in a direction In the illustrated embodiment of theinapproaching a position parallel with the vention the brake consistsof'a reciproc-able length of the vehicle and thelinks 22 there- .95

40 tongue or dog 10 having a stem 11 mounted upon exert a pull on thedogs and move them in a. suitable guide formed in a housing 12 out 'ofengagement with. the ratchet teeth. which spans and encloses a hub plate13 'pro- In applying the device to a car as will be vid'ed with anannular series of ratchet obviousfrom the foregoing description, no I nteeth 14, the mounting of the tongue 01 change in the construction ofthe latter isre- 100 dog being such as to adapt it for movement quired,the hub plate'being applicable to toward and from the plane of the hubplate the inner end of the .hub in position for enfor engagement with ordisengagement from gagement by the dog or tonguecarried by said ratchetteeth. 7 I the housing which serves asa'sand bandor Secured to andcarried by the housing 12 guard'to protect the tongue or-dog andtheiI105.

is a pair of tongue or dog guides'ilo conratchet to preventaccumulations .of dust sisting of plates riveted or otherwise rigidlyfrom interfering withthej proper operation secured to the housing andhaving thick thereof. I ened inner ends providing perpendicular I-Iavingdescribed the'invention, what is g spaced walls 16between which thetongue claimed as new andusefulis: Y or dog slides when actuated bymeans of 1ts A vehicle brake having a hub plate pro stem 11 whichoperates in the guide open. vided with an annular series of ratchet.

- teeth, a housingenelosing the hub plate and zmcloperating meansconnected with the dog provided with "guides having parallel faces forWithdrawing the saineginOpposition to 10 disposed perpendicular to theplane of the" its actuating spring out of engagement With housing, a dogreciprocably mounted bethe ratehetteeth. I

tween. said guide faces for' lnevemelit to- In testimony whereof heaffixeshis signaward and from the plane of the ratchet ture.

teeth, a spring for yield'ingly impelllng the I clog toward the plane ofsaid ratchet teeth, I NEVVT'ONC. DIVELBISS.

